Anti-smashing control device for weight correction in weighing and transplanting

Abstract

The utility model relates to an anti-smash control device for weighing, transplanting and correcting weights, which comprises a transplanting mechanism, a weighing fork, a weight table and a weighing table, the transplanting mechanism comprises a support and a mobile platform, the weight table and the weighing table are respectively arranged on two sides of the mobile platform, a lifting mechanism is arranged on the transplanting mechanism, the other end of the lifting mechanism is connected with the weighing fork, and the weight table is connected with the weighing fork. A first optoelectronic switch is arranged on the support corresponding to the weight table, a second optoelectronic switch is arranged on the support corresponding to the weighing table, and the output end of the first optoelectronic switch and the output end of the second optoelectronic switch are connected with a PLC. The PLC is connected with the lifting mechanism, the moving platform and the weighing platform, and the PLC is in communication connection with an upper computer. The first photoelectric switch and the second photoelectric switch are arranged, the lifting mechanism and the moving platform are controlled by the PLC, and after the moving platform reaches the positions of the first photoelectric switch and the second photoelectric switch, the PLC controls the moving platform to stop moving, so that the operation precision of transplanting operation is improved.

Description

Technical Field

[0001] The utility model belongs to the field of lead ingot smelting control systems, and particularly relates to a weighing, transplanting, and calibration weight anti-smashing control device. Background Art

[0002] During the casting and weighing process of finished lead ingots in the nonferrous smelting industry, weighing and transplanting operations are generally performed arbitrarily by production personnel. Using a PLC controller, the staff manually controls the transplanting equipment to place the finished lead ingots on a weighing platform using a weighing fork for weighing. The weighing platform requires calibration after a period of use. During calibration, the production staff manually controls the transplanting equipment using a PLC controller to remove the weights using the weighing fork, then place the weights on the weighing platform for weighing. The weight of the known weights is then measured on the weighing platform to determine whether the two weights are consistent, thereby calibrating the weighing platform. Due to the heavy weight of the weights and finished lead ingots during this process, manual handling is impossible. When using existing transplanting equipment, staff rely on their experience on site, which can easily cause weights or finished lead ingots to fall, resulting in collisions and damage to the equipment, and posing operational risks. Summary of the Invention

[0003] In order to solve the problems of low operating precision, low degree of automation and operational risks in existing transplanting operations, the utility model provides a weighing and transplanting weight anti-smashing control device, which is provided with a first photoelectric switch and a second photoelectric switch. The lifting mechanism and the mobile platform are controlled by a PLC controller. After the mobile platform reaches the position of the first photoelectric switch and the second photoelectric switch, the PLC controller controls the mobile platform to stop moving, thereby improving the operating precision of the transplanting operation.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a weighing, transplanting and calibration weight anti-smashing control device, which includes a transplanting mechanism, a weighing fork, a weight platform and a weighing platform. The transplanting mechanism includes a bracket and a mobile platform. The weight platform and the weighing platform are respectively arranged on both sides of the mobile platform. A lifting mechanism is provided on the transplanting mechanism, and the other end of the lifting mechanism is connected to the weighing fork. A first photoelectric switch is provided on the bracket corresponding to the weight platform position, and a second photoelectric switch is provided on the bracket corresponding to the weighing platform position. The output ends of the first photoelectric switch and the second photoelectric switch are connected to a PLC controller;

[0005] The PLC controller is connected to the lifting mechanism, the mobile platform and the weighing platform, and the PLC controller is communicatively connected to the host computer.

[0006] Furthermore, the bracket is a square frame structure, a track is provided at the upper end of the bracket, a mobile platform is provided on the track, the mobile platform includes a moving trolley, the moving trolley slides along the track, the moving trolley includes a servo motor, the servo motor is provided with an absolute encoder, the output end of the absolute encoder is connected to the PLC controller, the PLC controller is connected to the servo controller, and the PLC controller is connected to the servo motor through the servo controller.

[0007] An absolute encoder is set to control the speed of the servo motor. The PLC controller realizes closed-loop control of the servo motor through the servo controller and the absolute encoder, so that the mobile trolley can move smoothly, providing a hardware foundation for the transplanting operation to smoothly reach the weight platform and weighing platform position.

[0008] Furthermore, the lifting mechanism includes a lifting cylinder, an air pipe, an air pump, a three-way solenoid valve and a hook, the air pipe is connected to the air pump, a three-way solenoid valve is arranged between the air pipe and the air pump, the coil of the three-way solenoid valve is connected to the output end of the PLC controller, and the output end of the PLC controller is also connected to the air pump;

[0009] The two air pipes are respectively connected to the left cavity and the right cavity of the lifting cylinder, and the lifting cylinder is detachably connected to the weighing fork through a hook.

[0010] The finished lead blocks and weights are heavy, so pneumatic control equipment is used to ensure smooth lifting of the finished lead blocks and weights.

[0011] Furthermore, a network switch is provided between the PLC controller and the host computer, and the PLC controller is communicatively connected to the host computer via the network switch.

[0012] Furthermore, the host computer is connected to a display.

[0013] Furthermore, the weighing platform includes a weighing sensor, and the weighing sensor is connected to the PLC controller via an RS232 serial port communication.

[0014] The host computer communicates with the PLC controller through a network switch. The staff does not need to work on site. Setting up a display facilitates human-computer interaction. The staff can remotely obtain the weighing parameters of the weighing platform. The remote operation of the staff improves the safety of the operation.

[0015] Through the above technical solution, the beneficial effects of the utility model are:

[0016] 1. The utility model provides a hardware foundation for automatic transplanting and weighing. A first photoelectric switch is set on the bracket corresponding to the position of the weight platform, and a second photoelectric switch is set on the bracket corresponding to the position of the weighing platform. The first photoelectric switch and the second photoelectric switch fix the stroke of the mobile platform. During operation, the PLC controller controls the lifting mechanism in combination with the weighing fork to complete the lifting of the weight or the finished lead block. The transplanting mechanism drives the lifting mechanism, the weighing fork and the weight or the finished lead block to move toward the weight platform or the weighing platform. When moving to the position of the first photoelectric switch or the second photoelectric switch, the first photoelectric switch or the second photoelectric switch is blocked by the mobile platform, and the photoelectric switch triggers the operation, and the level signal output to the PLC controller changes, thereby the PLC controller obtains the information that the mobile platform is in place, and the PLC controller controls the mobile platform to stop working. Compared with manual operation, the degree of automation and operation accuracy of the equipment are improved.

[0017] 2. The utility model is provided with a host computer, and the staff sends control instructions to the PLC controller through the host computer. The staff does not need to operate on site, which improves the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the structural diagrams of a weighing and transplanting calibration weight anti-smashing control device of the utility model;

[0019] Figure 2 This is one of the circuit diagrams of a weighing, transplanting and calibration weight anti-smashing control device of the utility model;

[0020] Figure 3 This is the second circuit diagram of the utility model of a weighing, transplanting and calibration weight anti-smashing control device.

[0021] Figure numbers: 1 is a weighing fork, 2 is a weight platform, 3 is a weighing platform, 4 is a bracket, 5 is a mobile platform, 6 is a first photoelectric switch, 7 is a second photoelectric switch, 8 is a PLC controller, 9 is a servo motor, 10 is an absolute encoder, 12 is a servo controller, 13 is a lifting cylinder, 14 is an air pipe, 15 is an air pump, 16 is a three-way solenoid valve, and 17 is a network switch. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] Example 1

[0024] like Figures 1-3As shown, a weighing, transplanting and calibration weight anti-smashing control device includes a transplanting mechanism, a weighing fork 1, a weight platform 2 and a weighing platform 3. The transplanting mechanism includes a bracket 4 and a mobile platform 5. The weight platform 2 and the weighing platform 3 are respectively arranged on both sides of the mobile platform 5. A lifting mechanism is provided on the transplanting mechanism, and the other end of the lifting mechanism is connected to the weighing fork 1. A first photoelectric switch 6 is provided on the bracket 4 corresponding to the weight platform 2, and a second photoelectric switch 7 is provided on the bracket 4 corresponding to the weighing platform 3. The output ends of the first photoelectric switch 6 and the second photoelectric switch 7 are connected to a PLC controller 8;

[0025] The PLC controller 8 is connected to the lifting mechanism, the mobile platform 5 and the weighing platform 3, and the PLC controller 8 is communicatively connected to the host computer.

[0026] The bracket 4 is a square frame structure, and a track is provided at the upper end of the bracket 4. A mobile platform 5 is provided on the track. The mobile platform 5 includes a mobile trolley, and the mobile trolley slides along the track. The mobile trolley includes a servo motor 9, and the servo motor 9 is provided with an absolute encoder 10. The output end of the absolute encoder 10 is connected to the PLC controller 8, and the PLC controller 8 is connected to the servo controller 12. The PLC controller 8 is connected to the servo motor 9 through the servo controller 12.

[0027] The lifting mechanism includes a lifting cylinder 13, an air pipe 14, an air pump 15, a three-way solenoid valve 16 and a hook. The air pipe 14 is connected to the air pump 15. A three-way solenoid valve 16 is provided between the air pipe 14 and the air pump 15. The coil of the three-way solenoid valve 16 is connected to the output end of the PLC controller 8. The output end of the PLC controller 8 is also connected to the air pump 15.

[0028] The air pipe 14 is connected to the left cavity and the right cavity of the lifting cylinder 13 respectively. The lifting cylinder 13 is detachably connected to the weighing fork 1 through a hook.

[0029] A network switch 17 is provided between the PLC controller 8 and the host computer, and the PLC controller 8 is connected to the host computer through the network switch 17 .

[0030] The host computer is connected to a display.

[0031] The weighing platform 3 includes a weighing sensor, and the weighing sensor is connected to the PLC controller 8 via an RS232 serial port communication.

[0032] When weighing the finished lead blocks, a worker sends a control signal to the PLC controller 8 via the host computer. The PLC controller 8 controls the servo motor 9 via the servo controller 12, which drives the wheels of the mobile cart along the track. When the mobile cart reaches the position of the first photoelectric switch 6, the transmitter and receiver of the first photoelectric switch 6 are blocked by the mobile cart. The light beam emitted by the transmitter cannot be received by the receiver, resulting in no output from the first photoelectric switch 6. The PLC controller 8, unable to receive the output signal from the first photoelectric switch 6, stops the servo motor 9 and the mobile cart. The PLC controller 8 activates the air pump 15, opens the three-way solenoid valve 16, and moves the piston of the lifting cylinder 13. The weighing fork 1 brings the finished lead block into contact with the weighing platform 3. The worker sends a control signal to the PLC controller 8 via the host computer, which moves the weighing fork 1 away from the weighing platform 3 according to the aforementioned principle. The weighing platform 3 weighs the finished lead block, and the weighing data is transmitted to the PLC controller 8 via the RS232 serial port. The data is then sent to the host computer by the PLC controller 8 through the network switch 17, and after analog-to-digital conversion, the staff can check the weight of the finished lead block through the display.

[0033] During the calibration operation, according to the working principle of the mobile trolley mentioned above, the mobile trolley first moves to the position of the second photoelectric switch 7. After the second photoelectric switch 7 is blocked, there is no output. The PLC controller 8 controls the mobile trolley to stop working. Then the PLC controller 8 controls the air pump 15 to work, the three-way solenoid valve 16 is reversed, the piston of the lifting cylinder 13 is displaced, the lifting mechanism is extended, the weighing fork 1 lifts the weight, and the PLC controller 8 controls the lifting cylinder 13 to shorten the lifting mechanism.

[0034] Then the PLC controller 8 controls the servo motor 9 to reverse, and the mobile trolley moves toward the position of the first photoelectric switch 6. When it reaches the position of the first photoelectric switch 6, the mobile trolley stops moving. The PLC controller 8 controls the lifting cylinder 13 to extend the lifting mechanism, and the weight falls steadily on the weighing platform 3. The PLC controller 8 controls the mobile trolley to move the weighing fork 1 away from the weighing platform 3. The weighing platform 3 weighs the weight. The staff checks the weight weighed by the weight through the display. The staff determines whether the weight weighed by the weight is consistent with the weight of the weight. If not, the weighing platform 3 is calibrated.

[0035] On the basis of the above, the PLC controller 8 is provided with a control program to increase the operation smoothness of the mobile trolley and the lifting mechanism.

[0036] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A device for preventing weights from being smashed when being weighed and transplanted, comprising a transplanting mechanism, a weighing fork (1), a weight platform (2) and a weighing platform (3), wherein the transplanting mechanism comprises a bracket (4) and a mobile platform (5), and the weight platform (2) and the weighing platform (3) are arranged on both sides of the mobile platform (5), and characterized in that: A lifting mechanism is provided on the transplanting mechanism, the other end of the lifting mechanism is connected to a weighing fork (1), a first photoelectric switch (6) is provided on the bracket (4) at a position corresponding to the weight platform (2), a second photoelectric switch (7) is provided on the bracket (4) at a position corresponding to the weighing platform (3), and the output ends of the first photoelectric switch (6) and the second photoelectric switch (7) are connected to a PLC controller (8); The PLC controller (8) is connected to the lifting mechanism, the mobile platform (5) and the weighing platform (3), and the PLC controller (8) is communicatively connected to a host computer.

2. A weighing and transplanting weight anti-smashing control device according to claim 1, characterized in that: The bracket (4) is a square frame structure. A track is provided at the upper end of the bracket (4). A moving platform (5) is provided on the track. The moving platform (5) includes a moving trolley. The moving trolley slides along the track. The moving trolley includes a servo motor (9). The servo motor (9) is provided with an absolute value encoder (10). The output end of the absolute value encoder (10) is connected to a PLC controller (8). The PLC controller (8) is connected to a servo controller (12). The PLC controller (8) is connected to the servo motor (9) via the servo controller (12).

3. A weighing and transplanting weight anti-smashing control device according to claim 1, characterized in that: The lifting mechanism comprises a lifting cylinder (13), an air pipe (14), an air pump (15), a three-way solenoid valve (16) and a hook, wherein the air pipe (14) is connected to the air pump (15), a three-way solenoid valve (16) is provided between the air pipe (14) and the air pump (15), a coil of the three-way solenoid valve (16) is connected to the output end of the PLC controller (8), and the output end of the PLC controller (8) is also connected to the air pump (15); The two air pipes (14) are respectively connected to the left cavity and the right cavity of the lifting cylinder (13), and the lifting cylinder (13) is detachably connected to the weighing fork (1) via a hook.

4. A weighing and transplanting weight anti-smashing control device according to claim 3, characterized in that: A network switch (17) is provided between the PLC controller (8) and the host computer, and the PLC controller (8) is communicatively connected to the host computer via the network switch (17).

5. The weighing and transplanting weight anti-smashing control device according to claim 1, characterized in that: The host computer is connected to a display.

6. The weighing and transplanting weight anti-smashing control device according to claim 1, characterized in that: The weighing platform (3) includes a weighing sensor, and the weighing sensor is connected to the PLC controller (8) via an RS232 serial port communication.

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